Tsinghua University, the manufacture of new street lights to save electricity 42 billion degrees

Annual savings of 42 billion kwh of electricity, equivalent to saving the standard coal of 15 million 800 thousand tons, close to the production of several large coal mines a year. This is the energy-saving street lighting technology using data before the Tsinghua University developed into the national road lighting facilities after.

This is known as the new power LED Lighting Technology City days before a major breakthrough. The State Key Laboratory of Integrated Optoelectronics, Tsinghua University Professor Luo Yi group as the main research, breakthrough technology bottlenecks, the actual LED street lamp illuminance distribution nearly rectangular uniform illuminance distribution, than the current road using high-pressure sodium lamp comprehensive energy saving more than 60%. If the roads are used, and a new type of LED lights, not only reduces the waste of water resources, but also can reduce the coal dust emissions 4 million 700 thousand tons, reducing acid rain SO2 emissions 440 thousand tons, greatly reduced due to the power plant nearby residents and plant pollution.

LED is a light emitting diode (Light Emitting Diode) - the English, is a light emitting device of semiconductor pn junction formation based on the luminous efficiency of white LED GaN based blue LED and yellow phosphor synthesis has reached 130 LM / W, and the device has low production cost, stable performance, easy to accept, efficient, market energy saving, long life, good color index, cold light source, environment friendly etc..

At present, the city road lighting for the lighting power LED technology has been successfully applied in Dongguan town of Changping City, Guangdong Province Science Center and the Tsinghua University in the Olympic Stadium, and achieved good energy-saving and lighting effect.

Source: Beijing daily